Waterproof Bluetooth speaker £5.99 (Prime or £9.99 non-Prime) @ Amazon 2 for the price of 1 - Sold by First Elegance and Fulfilled by Amazon

Waterproof speaker Promotion buy 1 get 1free for prime members (add 2 to the basket and you will be charged for 1),no reviews but Can't go wrong with the price, particularly if you are like me wanting a micro usb as well (included) to charge your phone